{* ../../docs_src/first_steps/tutorial001_py310.py hl[6] *}

Декоратор `@app.get("/")` повідомляє **FastAPI**, що функція одразу нижче відповідає за обробку запитів, які надходять до:

* шляху `/`
* використовуючи <dfn title="HTTP метод GET"><code>get</code> операція</dfn>

/// info | `@decorator` Інформація

Синтаксис `@something` у Python називається «декоратором».

  /**
   * Returns a function that ignores its input and returns the result of {@code supplier.get()}.
   *
   * <p>Prefer to use the lambda expression {@code o -> supplier.get()} instead. Note that it is not
   * serializable unless you explicitly make it {@link Serializable}, typically by writing {@code
   * (Function<F, T> & Serializable) o -> supplier.get()}.
   *
   * @since 10.0
   */

        assertThat(graph.removeNode(nodeList.get(i))).isTrue();
      }

      assertThat(graph.nodes()).hasSize(NUM_NODES - numNodesToRemove);
      // Number of edges remaining is unknown (node's incident edges have been removed).
      AbstractGraphTest.validateGraph(graph);

      for (int i = numNodesToRemove; i < NUM_NODES; ++i) {
        assertThat(graph.removeNode(nodeList.get(i))).isTrue();
      }

    // -----------/
    // - Methods -/
    // -----------/

    /**
     * Get the artifact ID of the extension.
     *
     * @return String
     */
    public String getArtifactId() {
        return this.artifactId;
    } // -- String getArtifactId()

    /**
     * Get the class loading strategy: 'self-first' (the default),
     * 'parent-first' (loads classes from the parent, then from the

            if (context.options().goals().isEmpty()
                    || context.options().goals().get().size() != 1) {
                return badGoalsErrorMessage("No goal or multiple goals specified, specify only one goal.", context);
            }

            String goalName = context.options().goals().get().get(0);
            Goal goal = context.goals.get(goalName);

            if (goal == null) {

        }
        return rule;
    }

    public static UserDictionary getUserDictionary(Environment env, Settings settings) {
        if (settings.get(USER_DICT_PATH_OPTION) != null && settings.get(USER_DICT_RULES_OPTION) != null) {
            throw new IllegalArgumentException(

    client = TestClient(app, base_url="http://example.com")
    response = client.get("/")
    assert response.status_code == 200, response.text
    client = TestClient(app, base_url="http://subdomain.example.com")
    response = client.get("/")
    assert response.status_code == 200, response.text
    client = TestClient(app, base_url="http://invalidhost")
    response = client.get("/")

   * create, cache and return" pattern. For further improvements, use {@link LoadingCache} and its
   * {@link LoadingCache#get(Object) get(K)} method instead of this one.
   *
   * <p>Among the improvements that this method and {@code LoadingCache.get(K)} both provide are:
   *
   * <ul>
   *   <li>{@linkplain LoadingCache#get(Object) awaiting the result of a pending load} rather than
   *       starting a redundant one

func getReqAccessKeyV4(r *http.Request, region string, stype serviceType) (auth.Credentials, bool, APIErrorCode) {
	ch, s3Err := parseCredentialHeader("Credential="+r.Form.Get(xhttp.AmzCredential), region, stype)
	if s3Err != ErrNone {
		// Strip off the Algorithm prefix.
		v4Auth := strings.TrimPrefix(r.Header.Get("Authorization"), signV4Algorithm)
		authFields := strings.Split(strings.TrimSpace(v4Auth), ",")
		if len(authFields) != 3 {

from enum import Enum

from fastapi import FastAPI

app = FastAPI()


class Tags(Enum):
    items = "items"
    users = "users"


@app.get("/items/", tags=[Tags.items])
async def get_items():
    return ["Portal gun", "Plumbus"]


@app.get("/users/", tags=[Tags.users])
async def read_users():